20111011222 has 16 divisors (see below), whose sum is σ = 30346004160. Its totient is φ = 9995717448.

The previous prime is 20111011189. The next prime is 20111011247. The reversal of 20111011222 is 22211011102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175413 + ... + 1192399.

It is an arithmetic number, because the mean of its divisors is an integer number (1896625260).

Almost surely, 2^20111011222 is an apocalyptic number.

20111011222 is a deficient number, since it is larger than the sum of its proper divisors (10234992938).

20111011222 is a wasteful number, since it uses less digits than its factorization.

20111011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20475.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20111011222 its reverse (22211011102), we get a palindrome (42322022324).

The spelling of 20111011222 in words is "twenty billion, one hundred eleven million, eleven thousand, two hundred twenty-two".